Public water system record
Mapleton
Serves an area of Peoria County, IL that includes Mapleton · 261 people served
Federal records show 1 health-based violation and 5 monitoring/reporting issues for Mapleton in the last ten years. The most serious issue in this window was a resolved Lead and Copper Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 5
Key facts
- Mapleton buys its water from T-L Rural Water District.
- Most recent formal enforcement: compliance order (no penalty) by Illinois, August 2022.
- Record on file since 1977, with 21 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 128 service lines.
Check whether Mapleton serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
350 | Apr 1, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Public Notice
OTHER
|
May 5, 2017 | Resolved |
Full record since 1977
EPA's records for Mapleton go back to 1977. Before October 19, 2016 they list 21 health-based violations (14 resolved, 7 archived by EPA without a recorded fix) and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 5 | 0 |
| 1990s | 4 | 4 |
| 2000s | 12 | 5 |
| 2010 to October 18, 2016 | 0 | 3 |
| October 19, 2016 to 2019 | 1 | 2 |
| 2020s | 0 | 3 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began January 2004, Resolved.
Show all 21 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 11 pCi/L, federal limit 5 pCi/L (2.2 times the limit)
|
Jan 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2003 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 11 pCi/L, federal limit 5 pCi/L (2.2 times the limit)
|
Oct 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9.9 pCi/L, federal limit 5 pCi/L (2 times the limit)
|
Jul 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 12.6 pCi/L, federal limit 5 pCi/L (2.5 times the limit)
|
Apr 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2003 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 12.6 pCi/L, federal limit 5 pCi/L (2.5 times the limit)
|
Jan 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 12.6 pCi/L, federal limit 5 pCi/L (2.5 times the limit)
|
Oct 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2002 | Archived |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 19.9 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
|
Jan 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2001 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 10.9 pCi/L, federal limit 5 pCi/L (2.2 times the limit)
|
Sep 1, 2000 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Jan 1, 1998 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 1, 1996 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Dec 30, 1993 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 1, 1992 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 1988 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 1, 1988 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Dec 1, 1984 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 14, 1984 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Dec 17, 1981 | Archived |
Enforcement actions
Illinois regulators took 4 formal enforcement actions against Mapleton between 2002 and 2022. The most recent was a compliance order (no penalty) in August 2022.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 2, 2022 | Illinois | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Mar 4, 2004 | Illinois | Signed compliance agreement | 1 violation (1 health-based): Combined Radium (-226 and -228) |
| May 12, 2003 | Illinois | Signed compliance agreement | 10 violations (10 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
| Feb 19, 2002 | Illinois | Signed compliance agreement | 11 violations (11 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
What the violations mean
Lead and Copper Rule
1 incidentThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Mapleton buys its water from T-L Rural Water District. It lists no wells or intakes of its own.
Buys water from
- T-L Rural Water District Glasford, IL
Annual water quality report
Mapleton must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Mapleton for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Illinois.
Certified drinking water labs by state EPA guidance for private wells